/**
    * Copyright 2005-2012 The Kuali Foundation
    *
    * Licensed under the Educational Community License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    * http://www.opensource.org/licenses/ecl2.php
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.kuali.rice.krad.service.impl;
  
  import java.lang.reflect.InvocationTargetException;
  import java.util.HashMap;
  import java.util.Iterator;
  import java.util.List;
  import java.util.Map;
  import java.util.TreeMap;
  
  import org.apache.commons.beanutils.PropertyUtils;
  import org.kuali.rice.krad.exception.IntrospectionException;
  
  public class PersistenceServiceImplBase extends PersistenceServiceStructureImplBase {
  
  	/**
  	 * @see org.kuali.rice.krad.service.PersistenceMetadataService#getPrimaryKeyFields(java.lang.Object)
  	 */
  	public Map getPrimaryKeyFieldValues(Object persistableObject) {
  		return getPrimaryKeyFieldValues(persistableObject, false);
  	}
  
  	/**
  	 * @see org.kuali.rice.krad.service.PersistenceMetadataService#getPrimaryKeyFields(java.lang.Object,
  	 *      boolean)
  	 */
  	public Map getPrimaryKeyFieldValues(Object persistableObject, boolean sortFieldNames) {
  		if (persistableObject == null) {
  			throw new IllegalArgumentException("invalid (null) persistableObject");
  		}
  
  		Map keyValueMap = null;
  		if (sortFieldNames) {
  			keyValueMap = new TreeMap();
  		} else {
  			keyValueMap = new HashMap();
  		}
  
  		String className = null;
  		String fieldName = null;
  		try {
  			List fields = listPrimaryKeyFieldNames(persistableObject.getClass());
  			for (Iterator i = fields.iterator(); i.hasNext();) {
  				fieldName = (String) i.next();
  				className = persistableObject.getClass().getName();
  				Object fieldValue = PropertyUtils.getSimpleProperty(persistableObject, fieldName);
  
  				keyValueMap.put(fieldName, fieldValue);
  			}
  		} catch (IllegalAccessException e) {
  			throw new IntrospectionException("problem accessing property '" + className + "." + fieldName + "'", e);
  		} catch (NoSuchMethodException e) {
  			throw new IntrospectionException("unable to invoke getter for property '" + className + "." + fieldName + "'", e);
  		} catch (InvocationTargetException e) {
  			throw new IntrospectionException("problem invoking getter for property '" + className + "." + fieldName + "'", e);
  		}
  
  		return keyValueMap;
  	}
  
  }